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Finding the Fourth Proportional to 393,548.27, 590,340.85 and 127,329.62

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Solution

The fourth proportional to 393,548.27, 590,340.85 and 127,329.62 is: 191,000.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,548.27 : 590,340.85 = 127,329.62 : x
  2. Step 2: Convert to fraction form
    393,548.27/590,340.85 = 127,329.62/x
  3. Step 3: Cross multiply
    393,548.27x = 590,340.85 × 127,329.62
  4. Step 4: Simplify right side
    393,548.27x = 75,167,877,258.51
  5. Step 5: Solve for x
    x = 75,167,877,258.51/393,548.27
  6. Step 6: Final answer
    x = 191,000.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.